I heard there was issues with this. But yesterday I read it was when you had two monitors with different refresh rates. Anyways just installed my second 560 for sli. Running dual monitors. Newest drivers.

Top card with monitors plugged into it won't downclock. Bottom one does. If I disable sli they both do. Also with sli enabled the top card is 10c hotter then with it off.

Any ideas on a fix?

Also top card is idling around 54c. It is the card I already had and was around 40c I believe before this.

Edit Wow disabling second monitor dropped the temp by 10c in about 90 seconds. Make that 15c.

Edit again. With only one monitor they both drop to 2d clocks. Hopefully this gets fixed with new drivers. Idle at 55c and gaming at 60c. Thats not cool.Edited by lightsout - 5/19/11 at 7:54pm

A lot depends if you are running the AERO interface or max performance mode too. I run four monitors on two 460's (soon to be 560 Ti's) and have several issuses that Nvidia is aware of now... especially as regards CUDA apps.

My problem is they will downclock and never UP clock after ANY CUDA app is run then paused or halted.

I have also noticed a conflict using MSI Afterburner with the NVidia drivers... but hard to nail down the why's of it.. like fan control and such. And it depends if they are running SLI, Surround, or just four separate monitors. It's a real mess, but seems to be getting better as Nvidia addresses these problems.

In nVidia Control Panel under power management mode, change it from Max Performance Mode to Adaptive, then restart the PC.

And yes, adding another monitor place quite a lot of stress on a video card.

Tried this didn't help.

Quote:

Originally Posted by Arizonian

Yeah, I've read it before with multiple monitors it won't down clock.

Also, in SLI the top card, regardless of brand/manufacturer always runs hotter as the heat off the bottom card dissipates upward in most cases.

Is your side fan blowing into your case or drawing air out? Sometimes fan management helps bring the ambient temps down inside the tower.

The reference cards that blow the air exhaust from the GPU out the back air flow bracket in SLI keep the top card cooler than non-reference cards that dump the hot air inside.

What's happening with your cards is normal for most of us. I've done some homework on it since I'm about to SLI mine by end of summer hopefully.

Good luck bud.

I'm aware that the top card is hotter. I just came from sli 460's. But this is different. If I disable sli they both are still running but they both drop to about 35c. As soon as sli is enabled the top card jumps to 50c.

I tried putting one monitor plugged into the bottom card. It simply reversed it. Now the bottom card wont clock down and is at 50c and the topcard is at 35c.
So its definitely a bug and not heat in my case. Although I may set my side fans to exhaust and see what happens.

Quote:

Originally Posted by TickleMeElmo

It's not a bug, it just doesn't downclock and stays in the low performance 3D mode. A walk around for this is to either disable SLI, or use Nvidia Inspector to force 2D P States.

I'm going to check this out thanks.

EDIT* It doesn't seem to do anything when I hit apply clocks.???Edited by lightsout - 5/20/11 at 6:49am

So I guess I will just disable sli for now unless gaming. Bith cards idle at 31c if I do that. I'm trying to get a hot key set up to enable and disable sli. All the scripts I found through google seem to point to the wrong exe. Nvidia must have changed it.